Heat exchanger



April 20, 1926. 1,581,384

D. H. CHESTER HEAT EXCHANGER w Filed April 28, 1921 2 Sheets-Sheet 1 2 3 gal- 2:

"x Q w e Wi'ihes 5 e .9 fnanior a I i fiflaberZCf/aesiiwg April 20 1926. 1 1,581,384

. D. H. CHESTER.

HEAT EXCHANGER Filed April 28, 19 21 2 Sheets-Shes; 2

fi/Z'inesses Patented Apr. 20, 1926.

UNITED STATES DICK HUBERT CHESTER, OF BUFFALO, NEW YORK.

HEAT EXCHANGER.

Applicationfiled April 28, 1921. Serial No. 465,110.

To all whom it may concern;

Be it known that I, DICK Hunnn'r CHES- run, a citizen of the United States, residing in Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Heat Exchangers, of which the following is a specification.

This invention relates to a heat exchanger designed for the transfer of heat from one liquid to another liquid. 'It operates on the counter-current principle, in which hot and cold liquids are flowing in opposite directions at all times. One of the liquids passes through tubes, and the other liquid circulates outside of the tubes through conduits, which enclose or encase the tubes. For use for heating oil or water the tubes preferably are straight seamless drawn copper, but tubes of brass, steel, or other metal may be used as may best suit the conditions.

One feature of the invention is that these tubes are expanded or otherwise suitably secured atone end in a stationary tube-sheel while their other ends are secured in a tubesheet forming part of a floating head. This arrangement takes care of the expansion and contraction of the tubes.

Caps or covers are provided for the ends of the outer casings and also for the floating heads.

Another feature of the invention is its accessibility. By removing the caps at each end, the tubes of any section, and the outer conduits as well, are accessible for examination, cleaning or repair.

Another feature is the means for supporting the tubes in separated or spaced relation to each other such as plates each of which is a segment of substantially one-half the cross-sectional area of the conduit.

Another feature appertains to the tubeplate, later described, which in the present instance is a portion of a floating or of a stationary tube-head, as the case may be, and the location and peculiar coactive relations and functions thereof, whereby this plate, in addition to carrying in supporting connection the ends of two sets of tubes, constitutes an impact-plate against which the heating current is turned in a direction transverse to its former line of flow, in the present instance downwardly. By this means said heating current impinges forcibly against the inner surface of said plate, and thereby normally intensifies the heating of this plate, and at the same time causes a circular sections can be added so long as the friction .does not beco ne so GXCGSSIVQ as to reduce unduly the capacity.

In the accompanying drawings which form part of this specification, Figure 1, is a side elevation of the apparatus partly broken away.

Figure 2, is an end elevation as seen from the left hand in Fig. 1.

Fig. 3, is a right end elevation of Fig. 1,- a cap or cover being removed and exposing.

the ad acent tube- Jlate and tubes.

W l big. 1-, IS a fragmentary view on the line of Fig. 1, as seen from the left hand in F 1g. 1.

F1. 5, IS a fragmentary view on the line .6. 55 of Fig. 1, looking in the direction of the left hand section-line arrow.

Fig. 6, is a fragmentary View on the line 66 of Fig. 3 looking in the direction of the section-line arrow.

I Similar reference characters refer to similar parts throughout the several views.

My invention comprises in its main parts or elements the supports A, the conduits B, the outer covers C and C; the intermediate supports D, the tubes E having the stationary plates'F, the floating heads G, and their covers H.

The conduits B are of suitable metal, and are in diameter sufficient to receive there in the tubes E with space for circulation of fluid or liquid around said tubes.

'lheconduits B, are shown in the present instance, as consisting of separate tubular members, arranged in series, parallel to each other and one above the other, resting upon he supports A and spaced apart by the intermediate supports'D.

Referring to Fig. 1, each conduit B is a straight portion 10 provided with an eX- terior annular flange, 11 and 12, at each end.

The first conduit B in the series is provided with a terminal connecting'member 13, having a communication means 14, which,

in the present instance, is an inlet for the heating medium. The connecting member 13 is provided at each end with an exterior annular flange such as and 16, the flange by bolts or other suitable means, not shown, 15 being s-epa ably sect red by belts or other to the flange 23 of the extended portion of suitable means, not shown, to the flange 12 the coupling ineml er i9. f the conduit B. A communication means The tubes pre' erably are of seamless l 17, which, in the resent instance, provides drawn copper, brass or steel, expanded or an outlet for the liquid or fluid which is to ot erwise secured at one end in stationary be heated, provided adjacent to the conu necting' men'iber 1?,- hai an exterior ana U nular flange 18 separably secur d by bolts fie e plates F or F and similarly secured opposite end in a t ibe plate 36 ot' the head G. The tube plates F are or other suitebe means, not shown, to the sho than the tube plates F, and provide flange ot the connecting member 13, a at ary attachment means for a single stationary tube plate l for the pipes b.' oi tubes, and are used for the tubes being separably secured be" nan f loci in the first and last of the conduits 16 and 18; and it should be i i od lie the tube plates :3 provide stationit desirable in practi e, what in the pro; ttachnieit means for int rmediate instance is shown as an inlet ma be us I only 01.0 instance thereof being shown as an outlet, and what is shown as an on d may be used a an inlet.

The conduits B are provided at one end support ior the tubes or with coupling members 19. llach coupling etveen the flanges 26 member 19 comprises two short conduit p ,ren! tions 20 having exterior annular flanges 21 hown, to the ht length of one eads, there being ssace, as at 35, t "een the tube heads 4% and the covers 0 i y p ovision is made for the expansion l contraction of the tubes 1 annular flange 23, a s ht connecting porjacent conduits. The passageway b tween tion 2st between the ions 19 and a cap the plate 33 and the mall of tie connecting C, the enlarged port '3, the straight conportion 29 serves to allow the passage of the nccting portion 24; he interior of the heating fluid i i-om on conduit B into the adjacent cap or cov providing a pasnext conduit in the ame series. The tube sageway for liquid or fluid from one conduit plates 86 are separably secured at each end to the other. The ang'e 2t oi the upper to the ex erior flanges 3d of the caps H, portion sepa a attached by bolts or YlllCli (TC encloset by the caps C forming other suitable in flange 11 of the conduit B, and the 1 21 ot' the lower portion 20 is similarly secured to the straight in length 1.0 oi the next adjacent conduit B. Any suitable connectiins may be used to connect the other end of the conduits in series. ll hen the conduits consist of separate tubular members, hen there are pretit soared apart or *llOl, the supporting ided, there being} Each of these nt o on erably used connections such as the coupling mit members 2? which with the coupling memslight-1y bers 19 connect the conduits B in series. unit th Each coupling member COD'lPliSQS two i c it B t short conduit porticfi anc a s i a i of the necting portion 29 betweei the per ions 28. t The The outer eLd of the n'iember 27 an espl: a 1 longituterior annular dan e 3;, which is seoarably dii 11b3,, th plat l in the secured to the flange the cover C, a lower part of the he plate stationary tube plate being eeparabl se- 88 is in the upper i, the tubes E passing cured between th tier 3 )1" h the plate The current of the short portion 28 owing thro, exterior annular l; 1

' oi the tube B on the iasses over one plate the conduit r M i ,ri i secured to the flat Q i i ii i oil, and under the other plate as at it),

1 1 7 v j v conduits B, the plate is l etwecn the straight out material interruption ot t 1e flow.

. p connecting portion 29 and the interior or tne nerd means tor transverse commucover C provitung passag gewaffs 101' liquid or tluid between one conduit and the other, s and the tubes E of an adjacent se- The covers C and C are p erabl of the es t to cross-connections J, 3 and 6, term shown in the drawings, that is, the VlClll, these cross-connections being are elongated domehaped m mbers, the '1 f1l ly connected parts. Cross-conneccovers C differing from the covers C only in having an interior of less depth. The covers are provided with an exterior an- \J nular flange which is separably secured ersc communication between i are shown in 1 and 6 anti denoted by J.

in practice the parts comprising the invention may be providedwith an exterior covering, not shown, of'asbestos or other suit able material for preventing loss of heat by radiation, or a suitable heat case or enclosing means, not shown, for the whole structure may be provided.

In operation: The heating fluid is introduced into the exchanger at the inlet 14 appurtenant to the first of the series of pipes or conduits B, and flows through the series of pipes or conduits and through the passageways and cross-connections around or exteriorly of the tubes E in the direction indicated by the arrows, and is discharged by the outlet 14: appurtenant to thelast of the pipes or conduits in the series. The fluid or liquid to be heated is introduced at the inlet 17 appurtenant to the tubes E of the last pipe or conduit of the series, the flow being in the direction indicated by the arrows and counter to the direction of flow of the heating fluid or liquid, the fluid or liquid to be heated being discharged by the outlet 17 appurtenant to the tubes E of the first pipe or conduit of the series.

In the course of the flow from an overlying conduit B to an underlying conduit B through the passageways provided by the coupling members 19 and 27, the heating fluid or liquid is forcibly impinged against the interior surface of the plate 36 of a floating tube head G, or against the interior surface of the plate as the case may be, and is turned substantially at right angles or transversely to the direction of former flow, and is caused to flow through the underlying conduit B reversely to the flow through the overlying conduit B. I

Having thus described my invention, it should be understood that there may be modifications thereof and variations therein Without departing from the spirit of the invention, or exceeding the scope of the ap pended claims.

I claim:

1. The combination with a plurality of cylindrical conduits arranged parallel to one another of a plurality of tubes parallelly disposed in each of said conduits, coupling members connecting said cylindrical conduits in series, and floating heads in alternate coupling members providing communication betveen the tubes in one conduit and t-hetubes in the connected conduit and providing for expansion and contraction of the tubes and conduits.

2. The combination with a plurality of cylindrical conduits arranged parallel to one another, of a plurality of tubes parallelly disposed in each of said conduits, coupling members connecting said cylindrical conduits, in series, partitions in alternate coupling members separating the passageways of said tubes from the passageways surrounding the tubes, and floating heads in the remaining coupling members aflording communication between the successive sets of tubes and providing for expansion and contraction of the tubes.

3. The combination with a plurality of conduits arranged parallel to one another, of a plurality of tubes parallelly disposed in each of said conduits, baffle plates floatingly disposed in said conduits and having openings for the passage of the tubes therethrough, connections connecting said conduits in series, partitions in alternate connections separating the passageways of said tubes from the passageways surrounding the tubes, and floating heads in the remaining connections.

' D. HUBER-T CHESTER. 

